UA23454U - Torpedo for blast treatment of stratum - Google Patents

Abstract

The utility model relates to oil and gas industry. Torpedo for blast treatment of stratum has non-hermetic thin-wall aluminum body in which charge of explosive substance and explosive cartridge are placed. To enlarge area of artificial fracturing in the rock of critical area of formation in the body of torpedo continuous charge of non-retarded explosive substance is placed.

Description

Description of the invention

The useful model refers to means of processing the formation and is intended for the excitation of production wells. 2 The closest technical solution to the claimed device is a torpedo for explosive treatment of the formation, which has a non-hermetic thin-walled aluminum case, in which a charge of cylindrical checkers of phlegmatized explosive substance and a hermetic explosive cartridge |1) are placed. The disadvantage of the torpedo is that during the explosion, the duration of the action of the explosive pulse on the rock of the productive layer is not controlled.

The task to be solved by the useful model is the creation of a torpedo for the explosive treatment of the 70 layer with the provision of control over the duration of the action of the explosive pulse on the rock of the productive layer.

The technical result expected from the application of the useful model is the expansion of the area of artificial fracturing in the rock near the outcrop zone of the productive reservoir.

To achieve a technical result from the use of a useful model, a solid charge of non-phlegmatized explosive substance is placed in a non-hermetic thin-walled aluminum case. 12 A useful model is illustrated by a drawing - Fig.

Torpedo for explosive processing of the formation consists of a non-hermetic thin-walled aluminum case 5, which contains a continuous charge of non-phlegmatized explosive substance 6 (for example, hexane, octogen) and a sealed explosive cartridge 7. The density of the non-phlegmatized explosive substance is chosen to ensure the most complete transfer of the energy of the explosive load on the rock of the productive layer, for this, the parameters of the explosive impulse must be matched with the parameters characterizing the rock of the productive layer. It is known |2) that matching the parameters of the explosive pulse and the processed rock is achieved when the condition is met

Take care of the dacha! n) where re and - the density of the non-phlegmatized explosive substance and the rock of the productive layer, respectively; 5th Z cha speed of detonation of non-phlegmatized explosive substance and speed of longitudinal waves in the rock of the productive layer, respectively. The advantage of a torpedo, in the body of which a solid charge of non-phlegmatized explosive substance is placed over a standard torpedo, in the body of which is placed a charge composed of checkers of phlegmatized explosive substance, is that the use of the first torpedo makes it possible to choose C

From this or that density of non-phlegmatized explosive substance (for example, for hexane from 110Okg/m? to 1bOOkg/m

C) to match the rock parameters of the productive layer. The use of the second torpedo, which uses warheads of phlegmatized explosive, does not make it possible to match the parameters of the impulse load with the rock parameters of the productive layer, since the warheads of phlegmatized me)

C5 explosives have a density of 160 Okg/m (1). Ha

The implementation of a useful model is achieved as follows. Preliminarily determine the required density of non-phlegmatized explosive according to the above condition (1). Later, in well 1 on geophysical cable 2, a torpedo is lowered into the liquid Z, in the body 5 of which a solid charge of non-phlegmatized explosive substance b with the calculated density is placed, and an explosive cartridge 7 for explosive "20 processing of the productive layer 4. After placing the torpedo in the well in at intervals of 8 s of the treated formation, the charge is detonated and explosive treatment of the formation is carried out. y Achieving a technical result from the application of a useful model is ensured by matching "" the parameters of the pulse load with the rock parameters of the treated formation, as a result of which the area of artificial fracture in the near-outbreak zone of the formation, as shown by the results of experimental studies,

It increases by 1595, which increases the efficiency of explosive treatment of the reservoir. ka The diagram (Fig) shows the layout of the torpedo in the well. The following are marked on the drawing: 1 - well; 2 - geophysical cable; C - liquid; 4 - productive layer; 5 - non-hermetic thin-walled aluminum case; 6 - solid charge of non-phlegmatized explosive substance; 7 - hermetic explosive cartridge.

This application for a declaratory patent of Ukraine for a utility model was partially prepared within the framework of the 3rd Mo3138 project of the Science and Technology Center in Ukraine (UNTC).

GT" Sources of information: 1. Prostrelochno-explosive equipment: Reference book / L.Ya. Friedlyander, V.A. Afanasyev, L.S. Vorobyev and others.

Ed. L. Ya. Friedlyandera. - 2nd ed., revised. and add.-M. Nedra, 1990, pp. 155-156. 2. Mosynets V.N. Crushing and seismic action of an explosion in rocks.-M.: Nedra, 1976, pp. 38-39.

Claims (1)

The formula of the invention 60 Torpedo for explosive treatment of the formation, which has a non-hermetic thin-walled aluminum case, in which a charge of cylindrical checkers of phlegmatized explosive substance and an explosive cartridge is placed, which is distinguished by the fact that a continuous charge of non-phlegmatized explosive substance is placed in the torpedo body. b5